Alert archive / New Jersey / Flash Flood Warnings in 2018
Flash Flood Warning 74, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood warning at Aug 13, 2018, 10:27 AM EDT for Burlington County, Camden County, New Jersey. It was in force for 2 hr. 3 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Aug 13, 2018, 10:27 AM EDT (14:27 UTC)
- Expired
- Aug 13, 2018, 12:43 PM EDT
- In force
- 2 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Flood severity
- None
Counties Burlington County, NJ, Camden County, NJ
The radar
The Philadelphia radar (KDIX), 55 km from the middle of the area, began a volume at 14:30 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 13, 11:18 AM EDT | FLOOD | Maple Shade, NJ | MULTIPLE LANE AND ROAD CLOSURES IN MAPLE SHADE...ESPECIALLY NEAR THE STATE HIGHWAY 73 AND 38 INTERCHANGE. |
| Aug 13, 11:24 AM EDT | FLASH FLOOD | Pennsauken, NJ | MULTIPLE ROAD CLOSURES IN PENNSAUKEN TWP...INCLUDING STATE HIGHWAY 73 AT HYLTON ROAD AND U.S. HIGHWAY 130 NEAR UNION AVENUE. |
| Aug 13, 12:00 PM EDT | FLASH FLOOD | Palmyra, NJ | STATE HIGHWAY 73 CLOSED AT COUNTY ROAD 543 FROM FLOODING. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Brookhaven, NY (KOKX), launched 12:00Z, 2.5 hours before the alert went out and 212 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 307 J/kg
- Mixed-layer CIN
- -7 J/kg
- Mixed-layer LCL
- 450 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 68 m²/s²
- 0-3 km storm-relative helicity
- 107 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
670
WGUS51 KPHI 131427
FFWPHI
NJC005-007-131800-
/O.NEW.KPHI.FF.W.0074.180813T1427Z-180813T1800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mount Holly NJ
1027 AM EDT MON AUG 13 2018
The National Weather Service in Mount Holly NJ has issued a
* Flash Flood Warning for...
Northwestern Camden County in southern New Jersey...
Northwestern Burlington County in southern New Jersey...
* Until 200 PM EDT.
* At 1026 AM EDT, Doppler radar and automated rain gauges indicated
thunderstorms producing heavy rain across the warned area. One to
two inches of rain have already fallen in Camden. Flash flooding
is expected to begin shortly in the areas of heaviest rain.
* Some locations that could experience flooding include...
Camden, Gloucester City, Cherry Hill, Bellmawr, Riverside, Palmyra,
Westville, Beverly, Brooklawn, Audubon Park, Ramblewood,
Barclay-Kingston, Golden Triangle, Ben Franklin Bridge,
Erlton-Ellisburg, Ashland, Greentree, Pennsauken and Maple Shade.
Additional rainfall amounts of up to one inch are possible in the
warned area.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, urban areas, highways, streets and underpasses as
well as other drainage areas and low lying spots.
&&
LAT...LON 3991 7496 3988 7503 3987 7512 3989 7514
3990 7513 3995 7514 3997 7511 3998 7507
4001 7504 4007 7492
$$
Klein1 follow-up statement
232
WGUS71 KPHI 131643
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
1243 PM EDT MON AUG 13 2018
NJC005-007-131652-
/O.CAN.KPHI.FF.W.0074.000000T0000Z-180813T1800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Camden NJ-Burlington NJ-
1243 PM EDT MON AUG 13 2018
...THE FLASH FLOOD WARNING FOR NORTHWESTERN CAMDEN AND NORTHWESTERN
BURLINGTON COUNTIES IS CANCELLED...
The heavy rain has ended and life threatening flash flooding is no
longer expected. However, areal flooding will linger through the
afternoon. This is now covered by a Flood Warning.
Please continue to heed any remaining road closures.
LAT...LON 3991 7496 3988 7503 3987 7512 3989 7514
3990 7513 3995 7514 3997 7511 3998 7507
4001 7504 4007 7492
$$
JRKThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 12, 10:08 PM EDT | Flash Flood Watch | PHI | Burlington, Camden, Gloucester, Hunterdon, Mercer, Middlesex and 6 more | 24 hr |
| Aug 13, 6:10 AM EDT | Areal Flood Advisory | PHI | Burlington, Ocean | 4 hr |
| Aug 13, 8:03 AM EDT | Areal Flood Advisory | PHI | Burlington, Camden, Gloucester, Salem | 4 hr |
| Aug 13, 8:30 AM EDT | Flash Flood Warning | PHI | Burlington, Monmouth, Ocean | 7 hr |
| Aug 13, 9:14 AM EDT | Areal Flood Advisory | PHI | Gloucester, Salem | 4 hr |
| Aug 13, 9:32 AM EDT | Special Marine Warning | PHI | 58 min | |
| Aug 13, 10:35 AM EDT | Special Marine Warning | PHI | 85 min | |
| Aug 13, 10:48 AM EDT | Areal Flood Advisory | PHI | Middlesex, Monmouth, Somerset | 4 hr |
| Aug 13, 11:38 AM EDT | Areal Flood Advisory | PHI | Burlington | 3 hr |
| Aug 13, 12:37 PM EDT | Areal Flood Warning | PHI | Burlington, Camden | 18 hr |
| Aug 13, 3:19 PM EDT | Areal Flood Warning | PHI | Monmouth, Ocean | 6 hr |
Nearby
Flash Flood Warnings in New Jersey, 2018Every flash flood warning in 2018
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.